189 citations · 1.1k across the 27 of their papers we have counts for
27 papers
Staggered magnetization and entanglement enhancement by magnetic impurities in spin chain
Tony Apollaro, Alessandro Cuccoli, Andrea Fubini +2
We study the effects of a magnetic impurity on the behavior of a spin chain. At T=0, both with and without an applied uniform magnetic field, an oscillating magnetization a…
Two-spin entanglement distribution near factorized states
Fabrizio Baroni, Andrea Fubini, Valerio Tognetti +1
We study the two-spin entanglement distribution along the infinite chain described by the XY model in a transverse field; closed analytical expressions are derived for the…
Robustness of adiabatic passage trough a quantum phase transition
Andrea Fubini, Giuseppe Falci, Andreas Osterloh
We analyze the crossing of a quantum critical point based on exact results for the transverse XY model. In dependence of the change rate of the driving field, the evolution of the…
Quantum phase transition in spin systems studied through entanglement estimators
Andrea Fubini, Stephan Haas, Tommaso Roscilde +2
Entanglement represents a pure quantum effect involving two or more particles. Spin systems are good candidates for studying this effect and its relation with other collective phen…
Divergence of the entanglement range in low dimensional quantum systems
L. Amico, F. Baroni, A. Fubini +3
We study the pairwise entanglement close to separable ground states of a class of one dimensional quantum spin models. At T=0 we find that such ground states separate regions, in t…
Reading entanglement in terms of spin configurations in quantum magnets
Andrea Fubini, Tommaso Roscilde, Valerio Tognetti +2
We consider a quantum many-body system made of interacting spins on a lattice, and develop a formalism which allows to extract, out of conventional magnetic observabl…